Corneal Staphyloma. 389 



moved by the flow of tears, and the movement of the lids and 

 membrana nictitans. Trasbot recommends dilute alcohol (5 : 100). 

 MoUer advises chlorine water reduced to one-third the standard 

 strength, or boric acid solution (2 ; 100). Bouley found good 

 results from a cocaine solution. Cadiot and Almy get the best 

 results from creolin (.5 to i : 1000) 5 or 6 times a day, with 

 eserine. 



In all cases great relief can be obtained from a strong atropia 

 lotion (i : 100), in contracting the capillaries and dilating the 

 pupil. Indolent cases may often be helped by warm antiseptic 

 compresses, which seem to stimulate the circulation and nutri- 

 tion of the part. The juice exuding from the scraped fresh cas- 

 sava and concentrated to a syrupy consistency, is strongly antisep- 

 tic, and used with atropia or pilocarpin is the best agent known 

 for senile ulcer (Risley). 



In perforation employ rest, eserine, and antiseptic compression 

 bandages and in case of prolapsus iris, excise as .already advised. 

 This contracts the pupil, increases tension and favors exit of the 

 aqueous humor and the approximation of the edges of the open- 

 ing. Eserine has been used for central ulcers ; atropine for 

 peripheral. 



CORNEAIv STAPHYLOMA. 



Bulging corneal scar with adherent iris : from perforation, escape of 

 aqueous, intraocular pressure, vascularization of cornea. Diagnosis by cen- 

 tral cicatrix, vascularization, pigmentation. Oblique illumination. Treat- 

 ment : iridectomy, eserine. Suture. Enucleation. 



This is a bulging forward of a corneal scar with the iris ad- 

 herent to its internal surface. It may originate in perforation of 

 the cornea and escape of the aqueous humor, or in intraocular 

 pressure that advances the iris until it comes in contact with 

 the cornea, which becoming adherent and receiving an abnormally 

 large supply of blood or plasma, softens and bulges outward. It 

 may grow out to a great length in some cases,' Eck has seen it 

 two inches in the horse, and somewhat smaller in an ox. May 

 records a case affecting both eyes in the dog. 



Diagnosis is not usually difficult. The scar in the midst of a 

 granulating projection of the cornea is nearly conclusive, but the 



